![[Laser cut and engrave] Laser Cut Wooden Perpetual Calendar with Hourglass Design](https://storage-us.atomm.com/resource/xtool/community/attachment/xtool-community/0389c753-9e55-48a9-a24f-56c6055a7d03.jpeg?x-oss-process=image/resize,w_1200,h_900,limit_0/interlace,1/format,webp/auto-orient,1)

Nice an Smart Calender for everyone. You can use it in your office or at home.
First, I created the whole calendar in CAD, which allowed me to test everything online during assembly. After cutting, I sanded all the surfaces. I sanded the back of the rings a little more heavily so that they would turn easily.
I glued the parts together with superglue, and the calendar was finished.